Communication-concepts 2N6488 Manual do Utilizador descarregar pdf (Página 3)

2N6487, 2N6488, (NPN) 2N6490, 2N6491 (PNP)

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Figure 2. Switching Time Test Circuit

1000

Figure 3. Turn−On Time

, COLLECTOR CURRENT (AMP)

t, TIME (ns)

500

0.2 20

= 25°C

= 30 V

= 10

1.0 5.0

0.5 2.0 10

200

100

@ V

BE(off)

[ 5.0 V

NPN

PNP

+ 10 V

SCOPE

- 4 V

, t

v 10 ns

DUTY CYCLE = 1.0%

MUST BE FAST RECOVERY TYPE, e.g.:

1N5825 USED ABOVE I

[ 100 mA

MSD6100 USED BELOW I

[ 100 mA

25 ms

- 10 V

AND R

VARIED TO OBTAIN DESIRED CURRENT LEVELS.

FOR PNP, REVERSE ALL POLARITIES.

+ 30 V

Figure 4. Thermal Response

t, TIME (ms)

1.0

0.01

0.7

0.5

0.3

0.2

0.1

0.07

0.05

0.03

0.02

0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0 10 20 50 100 200 1.0 k500

(t) = r(t) R

= 1.67°C/W MAX

D CURVES APPLY FOR POWER

PULSE TRAIN SHOWN

READ TIME AT t

J(pk)

- T

= P

(pk)

JC(t)

(pk)

DUTY CYCLE, D = t

D = 0.5

0.2

0.05

0.02

0.01

SINGLE PULSE

0.1

r(t), TRANSIENT THERMAL RESISTANCE

(NORMALIZED)

1 2 3 4 5 6

2N6487, 2N6488, (NPN) 1
2N6490, 2N6491 (PNP) 1
Complementary Silicon 1
Plastic Power Transistors 1
Figure 1. Power Derating 2
ELECTRICAL CHARACTERISTICS (T 2
Figure 3. Turn−On Time 3
Figure 4. Thermal Response 3
ORDERING INFORMATION 5
Figure 10. “On” Voltages 5
PACKAGE DIMENSIONS 6

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